Most played cards in Canadian Threshold:

1 Decks
Daze
4 copies - 4 average
Delver of Secrets
4 copies - 4 average
Force of Will
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Ponder
4 copies - 4 average
Wasteland
4 copies - 4 average
Brainstorm
4 copies - 4 average
Tropical Island
3 copies - 3 average
Misty Rainforest
3 copies - 3 average
Tarmogoyf
3 copies - 3 average
Volcanic Island
3 copies - 3 average
Blazing Volley
2 copies - 2 average
Polluted Delta
2 copies - 2 average
Pyroblast
2 copies - 2 average
Flooded Strand
2 copies - 2 average
Klothys, God of Destiny
2 copies - 2 average
Scalding Tarn
2 copies - 2 average
Hooting Mandrills
2 copies - 2 average
Brazen Borrower
2 copies - 2 average
Surgical Extraction
2 copies - 2 average